JPS63190232A - Color cathode-ray tube - Google Patents
Color cathode-ray tubeInfo
- Publication number
- JPS63190232A JPS63190232A JP1837187A JP1837187A JPS63190232A JP S63190232 A JPS63190232 A JP S63190232A JP 1837187 A JP1837187 A JP 1837187A JP 1837187 A JP1837187 A JP 1837187A JP S63190232 A JPS63190232 A JP S63190232A
- Authority
- JP
- Japan
- Prior art keywords
- electron beam
- horizontal deflection
- magnetic field
- electron
- deflection magnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010894 electron beam technology Methods 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000011521 glass Substances 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000012216 screening Methods 0.000 abstract 3
- 230000002411 adverse Effects 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、高い水平偏向周波数、または複数の水平偏向
周波数で使用するのに適したコンバージェンス特性を有
するインライン形カラー陰極線管に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an in-line color cathode ray tube having convergence characteristics suitable for use at high horizontal deflection frequencies, or at multiple horizontal deflection frequencies.
インライン形カラー陰極線管を、標イ【１放送力式のカ
ラーテレビジョン受像機に用いる場合には現在あまり問
題は生じていないが、例えば高精細度のビデオデータ端
末（Ｖ Ｄ Ｔ ）川として、水平走査線数が多く、従
って高い水平偏向周波数で用いる場合には、−水平面上
に並ぶ３本の電子ビームのうち、中央のビームによる走
査域すなわち画像ｔｌｌ職域両端の電子ビームによる走
査域との相席が１１立って来るという問題があった。Currently, there are not many problems when in-line color cathode ray tubes are used in color television receivers of the standard broadcast power type, but for example, when used in high-definition video data terminals (VDT), When using a large number of horizontal scanning lines and therefore a high horizontal deflection frequency, - Of the three electron beams lined up on the horizontal plane, the scanning area by the central beam, that is, the scanning area by the electron beams at both ends of the image area. There was a problem with 11 people sitting together.
この問題のＪに（因は１次のように推定されている。The cause of J in this problem is estimated to be first-order.
３本の電子ビームをインラインに形成する電子銃の蛍光
面側端部に、ガラスバルブ内壁面に帯電した静電荷から
電子ビームを遮蔽するために、３本の電子ビームを囲む
円筒形のシールド側壁と、３本の電子ビーム夫々に対す
る電子ビーム通過孔を穿設した底面をｌ１３極に近い側
に有する非磁性金属製の有底円筒形のシールド電極が配
置されている。A cylindrical shield side wall surrounding the three electron beams is installed at the end of the fluorescent screen side of the electron gun that forms three electron beams in-line, in order to shield the electron beams from the electrostatic charge that is charged on the inner wall surface of the glass bulb. A bottomed cylindrical shield electrode made of non-magnetic metal and having an electron beam passage hole for each of the three electron beams on the bottom surface near the l13 pole is disposed.
一方、電子ビームを偏向させるための偏向磁界発牛用の
偏向ヨークが、バルブのファンネルのネック管との接続
部近くの外部に配置されているが。On the other hand, a deflection yoke for generating a deflection magnetic field for deflecting the electron beam is placed externally near the connection with the neck tube of the funnel of the valve.
偏向磁界の陰極側に近い端部がＪ°度シールド電極のシ
ールド側壁を通過するような相対位置にあるため、時間
的に変化する偏向磁界によって導電性のあるシールド側
壁内に渦電流が誘起され、この渦電流によって本来の偏
向磁界が弱められる。標ｑ！放送方式程度の水平偏向周
波数では、渦電流の影ダメ符は小さく、中央の電子ビー
ムによる走査域と両端の電子ビー１１による走査域とが
相違していても、相違、１【が小さいために問題になら
ない、しかし１例えばＶ Ｄ ’１’用の高精！１１度
ディスプレイ管では、水平走査線数が多く、水平偏向用
磁界の時間的変化率もテレビ放送の場合に比べて遥かに
速いので、シールド電極のシールド側壁に生ずる渦電流
も遥かに大きくなり、その影響が顕著に現れるようにな
ったためと考えられている。Because the end of the deflection magnetic field near the cathode side is in a relative position passing through the shield side wall of the J° shield electrode, eddy currents are induced in the conductive shield side wall by the time-varying deflection magnetic field. , the original deflection magnetic field is weakened by this eddy current. Sign q! At a horizontal deflection frequency similar to that of broadcasting systems, the shadow damage caused by eddy currents is small, and even if the scanning area by the central electron beam and the scanning area by the electron beams 11 at both ends are different, the difference, 1, is small. Not a problem, but high precision for 1 example V D '1'! In an 11-degree display tube, the number of horizontal scanning lines is large, and the time rate of change of the magnetic field for horizontal deflection is much faster than in the case of television broadcasting, so the eddy current generated on the shield side wall of the shield electrode is also much larger. This is thought to be due to the fact that its influence has become more noticeable.
また、特開昭５６−７６１４５号公報には、シールド電
極底面に中央電子ビームに作用する水平偏向用磁束密度
を高く、両側電子ビームに作用する水平偏向用磁束密度
を低くする磁界制御；＋３子を設けたインライン形カラ
ー陰極線管を対象にして、電子銃から生ずる各電子ビー
ムのうち偏向が他の電子ビームに比べ時間的に遅れない
方の電子ビー１１の通路に、水平偏向磁束の時間的変化
に伴い渦電流を発生させる渦電流誘起素子を設けること
が開示されている。そして、中央の電子ビー１１は−・
般に水ｊ１４偏向角度が小さくなるの゛を防止するため
に、＋”＋ｊｉ記磁界制御、＋３子（実際には高導磁率
磁性体１４の小型円筒形部材）を中央電子ビーム通過孔
の１〕ドに配置して局部的に磁束を集め、このビー１１
に作用する偏向磁界の磁束ｖＰ！度を高くしている。Furthermore, JP-A-56-76145 discloses magnetic field control on the bottom surface of the shield electrode that increases the horizontal deflection magnetic flux density acting on the central electron beam and lowers the horizontal deflection magnetic flux density acting on both side electron beams. For an in-line color cathode ray tube equipped with It is disclosed that an eddy current inducing element is provided that generates an eddy current as a result of the change. And the electronic bee 11 in the center is...
In general, in order to prevent the water deflection angle from becoming small, in the magnetic field control system, +3 (actually a small cylindrical member of high magnetic conductivity magnetic material 14) is placed in one of the central electron beam passage holes. ] This bead 11 is placed in the
The magnetic flux of the deflection magnetic field acting on vP! I'm raising the level.
また、両側電子ビーム通過孔の周囲には高導磁率磁性体
製の環状体を配置してビーム通過孔を迂回する磁束のバ
イパスを形成させ両側電子ビームに作用する水平偏向用
磁界が局部的に弱くなるようにしている。さらに両側ビ
ーム通過孔の上下に夫々ひさし状に突出して水平偏向磁
束に直交する渦電流誘起素子を設けている。従って、シ
ールド電極の底面には、４個の磁気制御素子と、４個の
渦電流誘起素子を夫々溶接等により配設している。In addition, an annular body made of a high-permeability magnetic material is placed around the electron beam passage holes on both sides to form a bypass for the magnetic flux that detours around the beam passage holes, so that the horizontal deflection magnetic field that acts on the electron beams on both sides is localized. I'm trying to get weaker. Furthermore, eddy current inducing elements are provided above and below the beam passage holes on both sides, respectively, to protrude like an eave and to be orthogonal to the horizontal deflection magnetic flux. Therefore, four magnetic control elements and four eddy current induction elements are respectively disposed on the bottom surface of the shield electrode by welding or the like.
次に、特開昭に’０−ｓｅ７３ｔ；号、特開昭６０−８
６７３７す・公報には」−足温電流により水平偏向用磁
界が弱められるのを避けるために、それぞれ、シールド
側壁の水平偏向磁界と交わって渦電流が生ずる個所を切
り欠いてしまう、及び、シールド側壁が偏向磁界と交わ
る面積を減少させるためにシールド側壁の高さを６．Ｏ
ｅｗ以下に制限してしまうことが開示されている。Next, JP-A No. 0-se73t;, JP-A No. 60-8
6737 - In order to prevent the horizontal deflection magnetic field from being weakened by the foot warming current, the shield side wall is cut out at the part where it intersects with the horizontal deflection magnetic field and an eddy current is generated, and the shield is The height of the shield sidewalls was increased to 6.5mm to reduce the area where the sidewalls intersect with the deflection field. O
It is disclosed that the value is limited to less than ew.
本発明は、インライン形カラー陰極線管を、高精細度を
得るために、水平走査線数を増し、水平偏向周波数を高
くして用いた場合に１．１立って来る。The present invention stands at 1.1 when an in-line color cathode ray tube is used by increasing the number of horizontal scanning lines and increasing the horizontal deflection frequency in order to obtain high definition.
中央電子ビームと両側電子ビームのコンバージェンス不
良を充分抑制すると共に他の問題点を解決し、しかも簡
弔で製作し易く、且つ、シールド電極の本来の効果は勿
論、副次的効果も充分に発揮されるカラー陰極線管を提
供することを目的とする。It sufficiently suppresses convergence defects between the central electron beam and both side electron beams, solves other problems, is simple and easy to manufacture, and fully exhibits not only the original effect of the shield electrode but also secondary effects. The purpose is to provide a color cathode ray tube that is
Ｃ問題点を解決するための手段〕
本発明においては一水平面内にほぼ並列した３本の電子
ビームを形成する電子銃の、蛍光面側端部に位置し、；
３個の電子ビーム通過孔を穿設した底面とガラスバルブ
壁面の帯電から電子ビームを遮蔽する円筒状シールド側
壁よりなる、非磁性金属製で蛍光面に向かって開口した
有底円筒形シールド電極の、円筒状シールド側壁に囲ま
れた内部の両側電子ビーム通過孔それぞれの上下部に、
非磁性金属製壁を底面に直交して突設し、この突設壁面
に水平偏向磁界によって渦電流を生じさせて両側ビーム
に対する水平偏向磁界の作用を弱め、両側電子ビームと
中央電子ビームとのミスコンバージェンスを、水平偏向
周波数を高くした場合にも実用」；問題のない程度に抑
制するようにした。Means for Solving Problem C] In the present invention, an electron gun is located at the phosphor screen side end of an electron gun that forms three nearly parallel electron beams in one horizontal plane;
A bottomed cylindrical shield electrode made of non-magnetic metal and opening toward the fluorescent screen, consisting of a bottom with three electron beam passage holes and a cylindrical shield side wall that shields the electron beam from charging on the glass bulb wall. , at the top and bottom of each of the electron beam passage holes on both sides inside the cylindrical shield side wall.
A non-magnetic metal wall is installed perpendicularly to the bottom surface, and an eddy current is generated on this projecting wall surface by a horizontal deflection magnetic field to weaken the effect of the horizontal deflection magnetic field on both side beams, and the effect of the horizontal deflection magnetic field on both side beams is reduced. Misconvergence can also be suppressed to a level that causes no problems even when the horizontal deflection frequency is increased.
本発明は、両側電子ビーム通過孔の一１１ドに非磁性金
属よりなる壁を、シールド電極Ｊ戊簡に直交して突設し
ているためこの突設壁面に流れる渦電流の形成する弱め
磁界の影響により、水平偏向磁界の作用をインライン配
列の各電子ビームに対し等しくすることが出来るように
なり、水平偏向周波数を高くしても、渦電流に起因する
ミスコンバージェンスを問題のない範囲内に抑制するこ
とが出来る。In the present invention, a wall made of a non-magnetic metal is provided at one end of the electron beam passage hole on both sides in a manner perpendicular to the shield electrode J, so that a weakening magnetic field is generated by an eddy current flowing on this projecting wall surface. Due to the influence of It can be suppressed.
第１図（ａ）は本発明のカラー陰極線管の一実施例のシ
ールド電極１の甲面図で、Ｌａはシールド側壁、ｌｂは
底面、２は両側ビーム通過孔の上下に底面１ｂに直交し
た壁面２ａを突設させるための非磁性金属製折曲げ体、
３は前記非磁性金属製折曲げ休２をシールド電極１の底
面１ｂに溶接する溶接点、４．６は両側ビーム通過孔、
５は中央ビーム通過孔である。第１図（ｂ）は」−記非
磁性金ｉｔ Ｍ折曲げ休２の側面図である。なお、折曲
げ休２に穿設する各ビームの通過孔４ａ、５ａ。FIG. 1(a) is a top view of the shield electrode 1 of an embodiment of the color cathode ray tube of the present invention, where La is the shield side wall, lb is the bottom surface, and 2 is the space above and below the beam passage holes on both sides perpendicular to the bottom surface 1b. a non-magnetic metal bent body for protruding the wall surface 2a;
3 is a welding point where the non-magnetic metal bending hole 2 is welded to the bottom surface 1b of the shield electrode 1; 4.6 is a beam passage hole on both sides;
5 is a central beam passage hole. FIG. 1(b) is a side view of the non-magnetic gold plate 2. FIG. In addition, passage holes 4a and 5a for each beam are bored in the bending hole 2.
６８は、それぞれ、シールド電極１の底面１ｂに穿設し
たビーム通過孔４．５，６より少し大きめにしておけば
、折曲げ体２を底面１ｂに溶接するとき、多少の位置誤
差があっても、電子ビームの集束などに悪影響を与えず
に済む、このようにすると、中央電子ビームに作用する
水平偏向磁界に対して、両側電子ビームに作用する水平
偏向磁界の強さを丁度適度に調節することが出来、３本
の電子ビームは１画面の中央部でも、両側でも、高い精
度で集中し、良好な高精細度の画像が得られる。第１図
（ｂ）に示した折曲げ体２はプレス作業により容易に生
産でき、また此の折曲げ体２をシールド電極１の底面に
溶接するのも極めて容易であって、生産量の多少にかか
わらず容易に実施できる。If holes 68 are made slightly larger than the beam passage holes 4.5 and 6 formed in the bottom surface 1b of the shield electrode 1, there will be some positional error when welding the bent body 2 to the bottom surface 1b. In this way, the strength of the horizontal deflection magnetic field acting on the electron beams on both sides can be adjusted to an appropriate level with respect to the horizontal deflection magnetic field acting on the central electron beam. The three electron beams can be focused with high accuracy both in the center and on both sides of one screen, resulting in a good high-definition image. The folded body 2 shown in FIG. 1(b) can be easily produced by pressing, and it is also extremely easy to weld this folded body 2 to the bottom surface of the shield electrode 1. It is easy to implement regardless of the situation.
以上説明したように本発明によれば、インライン形電子
銃を用いて、゛電子ビームのミスコンバージェンスを実
質的に問題にならない程度に抑制した高精細度管を容易
に５４作することが出来る。As explained above, according to the present invention, using an in-line electron gun, it is possible to easily fabricate 54 high-definition tubes in which electron beam misconvergence is suppressed to the extent that it is practically not a problem.
第１図（Ｑ）は本発明一実施例のシールド電極の甲面図
、第ＬＸ（ｂ）は本発明に係る偏向磁界調節用折曲げ体
の側面図である。
１・・・シールド電極、１ａ・・・シールド側壁、ｌｂ
・・・底面、２・・・折曲げ体、２ａ・・・非磁性金属
製の突設壁面、３・・・溶接点、４Ｉ６・・・両側ビー
ム通過孔、５・・・中央ビーム通過孔。
第１霞
（艮）
ｔｂ）
１ｂ充屓FIG. 1(Q) is a top view of a shield electrode according to an embodiment of the present invention, and FIG. 1(B) is a side view of a bent body for adjusting a deflection magnetic field according to the present invention. 1... Shield electrode, 1a... Shield side wall, lb
...Bottom surface, 2...Bent body, 2a...Protruding wall surface made of non-magnetic metal, 3...Welding point, 4I6...Both side beam passing hole, 5...Central beam passing hole . 1st haze (tb) 1b fullness
Claims (1)
にほぼ並列した３本の電子ビームを形成する電子銃の、
蛍光面側端部に位置し、３個の電子ビーム通過孔を穿設
した底面とガラスバルブ壁面の帯電から電子ビームを遮
蔽する円筒状シールド側壁よりなる、非磁性金属製で蛍
光面に向かって開口した有底円筒形シールド電極の、円
筒状シールド側壁に囲まれた内部の両側電子ビーム通過
孔それぞれの上下部に、非磁性金属製壁を底面に直交し
て突設したことを特徴とするカラー陰極線管。1. In an in-line color cathode ray tube, an electron gun that forms three nearly parallel electron beams in one horizontal plane.
It is located at the end of the phosphor screen, and is made of non-magnetic metal and consists of a bottom surface with three electron beam passage holes and a cylindrical shield side wall that shields the electron beam from charging on the glass bulb wall. A non-magnetic metal wall is provided at the upper and lower portions of each of the electron beam passage holes on both sides of the open bottomed cylindrical shield electrode surrounded by the cylindrical shield side walls, protruding perpendicularly to the bottom surface. Color cathode ray tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62018371A JP2760783B2 (en) | 1987-01-30 | 1987-01-30 | In-line color cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62018371A JP2760783B2 (en) | 1987-01-30 | 1987-01-30 | In-line color cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63190232A true JPS63190232A (en) | 1988-08-05 |
| JP2760783B2 JP2760783B2 (en) | 1998-06-04 |
Family
ID=11969852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62018371A Expired - Fee Related JP2760783B2 (en) | 1987-01-30 | 1987-01-30 | In-line color cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2760783B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6262526B1 (en) | 1995-09-21 | 2001-07-17 | Hitachi, Ltd | Color Braun tube |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50156822A (en) * | 1974-06-06 | 1975-12-18 | ||
| JPS5676145A (en) * | 1979-11-26 | 1981-06-23 | Mitsubishi Electric Corp | Color cathode-ray tube |
-
1987
- 1987-01-30 JP JP62018371A patent/JP2760783B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50156822A (en) * | 1974-06-06 | 1975-12-18 | ||
| JPS5676145A (en) * | 1979-11-26 | 1981-06-23 | Mitsubishi Electric Corp | Color cathode-ray tube |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6262526B1 (en) | 1995-09-21 | 2001-07-17 | Hitachi, Ltd | Color Braun tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2760783B2 (en) | 1998-06-04 |
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